Campus Quest Academy

Differentiation & Support Strategies

For Struggling Learners / IEP / 504:

• Math: Provide printed horizontal number lines (-20 to +20) and sign reference rules (\(p - q = p + (-q)\)).
• ELA: Allow students to dictate their CER responses or provide starter sentence frames.
• Pacing: Permit completion of 3 of the 4 problems on Page 2 before moving to Page 3.

For Advanced / Fast Finishers:

• Math: Challenge students to determine the overall average daily temperature change.
• Science: Write a paragraph explaining how hydrothermal vent bacteria relate to early life on Earth.
• History: Draw an illustrated caravanserai schematic map showing travel lodging.

Campus Quest Academy • Facilitator Guide Page 1 of 4

Answer Key & Scoring Guide

Module 1: Mathematics Solutions (25 Points Total)

Standards 7.NS.1, 7.NS.2, 7.NS.3

Part 1 Solutions (Student Packet Page 2: 13 Points Total) 7.NS.1 & 7.NS.2a

1. Polar Temperature Shifts (3 pts):

Expression: \(-15.4 + 9.6 - 11.8\)
Step 1: \(-15.4 + 9.6 = -5.8^\circ\text{C}\)
Step 2: \(-5.8 - 11.8 = \mathbf{-17.6^\circ\text{C}}\)
Final Temperature = -17.6°C

2. Sub-Ice Drone Elevation (3 pts):

Start: \(-42\frac{1}{2} = -\frac{170}{4}\text{ m}\); Ascends: \(+28\frac{3}{4} = +\frac{115}{4}\text{ m}\)
\(-\frac{170}{4} + \frac{115}{4} = -\frac{55}{4} = \mathbf{-13\frac{3}{4}\text{ m}}\) (or \(-13.75\text{ m}\))
New Elevation = -13¾ m (-13.75 m)

3. Additive Inverses (3 pts):

A. Required Change: \(\mathbf{+24^\circ\text{C}}\) (1 pt).
B. Reasoning (2 pts): By \(p + (-p) = 0\), opposite values cancel. Adding positive 24 to -24 yields 0 zero pairs, restoring the baseline.

4. Continuous Drilling Rate (4 pts):

Rate \(\times\) Time = \((-2.4\text{ m/hr}) \times 4.5\text{ hr}\)
\(2.4 \times 4.5 = 10.8\); negative \(\times\) positive = negative.
Total Depth Change = -10.8 meters

Part 2 Solutions (Student Packet Page 3: 12 Points Total) 7.NS.2b,d & 7.NS.3

5. Signed Fraction Division (2 pts):

\(\left(-\frac{5}{8}\right) \div \left(-\frac{15}{16}\right) = \left(-\frac{5}{8}\right) \times \left(-\frac{16}{15}\right)\)
Simplify: \(\frac{(-1) \times (-2)}{1 \times 3} = \mathbf{+\frac{2}{3}}\) (negative ÷ negative = positive).

6. Long Division Decimal Equivalents (3 pts):

A. \(\frac{5}{8}\): \(5 \div 8 = \mathbf{0.625}\) \(\rightarrow\) Terminating (remainder reaches 0).
B. \(-\frac{5}{6}\): \(-(5 \div 6) = \mathbf{-0.8\bar{3}}\) \(\rightarrow\) Repeating (digit 3 repeats infinitely).

7. Multi-Step Financial Ledger (7 pts):

A. Number Sentence (2 pts):
\(-185.50 + 750.00 + [4 \times (-62.75)] - 124.50 + [0.5 \times 196.00]\)

B. Computational Steps (3 pts):
• Fuel: \(4 \times (-62.75) = -251.00\)
• Refund: \(0.5 \times 196.00 = +98.00\)
• Credits: \(750.00 + 98.00 = +\$848.00\)
• Debits: \(-185.50 - 251.00 - 124.50 = -\$561.00\)
• Combine: \(848.00 - 561.00 = \mathbf{+\$287.00}\)

C. Status (2 pts): Surplus (+$287.00).

Campus Quest Academy • Math Answer Key (7.NS.1–3) Page 2 of 4

Answer Key & Scoring Guide

Module 2: Life Science Solutions (25 Points Total)

Standard MS-LS1

Part A: Organelle Command & Function Matching (8 Points: 2 pts each + 1 pt bonus)

1. Nucleus \(\rightarrow\) Letter B

The Executive Head Office & Blueprints containing DNA.

2. Mitochondria \(\rightarrow\) Letter D

The Power Plant producing cellular ATP energy.

3. Cell Membrane \(\rightarrow\) Letter A

The Security Guard regulating what enters and leaves.

4. Ribosomes \(\rightarrow\) Letter C

Assembly Line Workers synthesizing protein molecules.

Bonus Question Answer:

Chloroplast (also accept Cell Wall or Large Central Vacuole, though chloroplast is specific to photosynthesis).

Scoring Criteria: 1.5 points for matching the definition to organelle, 0.5 point for analogy letter match.

Part B: Cellular Transport & Osmosis Investigation (8 Points: 4 pts each beaker)

Beaker A (100% Distilled Pure Water):

1. Direction: Into the cell (2 pts).

2. Physical Result: Water rushes in down its concentration gradient. The cell expands, becomes firm and turgid, and pushes against its rigid cell wall. (In animal cells, it might lyse/burst, but in plant cells the wall prevents bursting) (2 pts).

Beaker B (20% Concentrated Saltwater):

1. Direction: Out of the cell (2 pts).

2. Physical Result: Water leaves the cytoplasm by osmosis toward the higher solute area. The cell loses volume, undergoes plasmolysis (cytoplasm shrivels and pulls away from the cell wall), causing wilting (2 pts).

Part C: Experimental Design & Variables (9 Points: 2 pts per variable, 3 pts prediction)

Independent Variable:

Water Temperature (°C)

Dependent Variable:

Circumference of balloon / CO₂ gas produced

Controlled Constants (Any 2):

Volume of water (100 mL), mass of yeast (5 g), flask size, duration (30 min).

Hypothesis Prediction & Biological Reasoning (3 pts):

Exemplar: Flask 3 (40°C) will produce the largest balloon because yeast enzymes function optimally in warm temperatures, accelerating cellular respiration. In contrast, 10°C is too sluggish, and 65°C will denature (kill/damage) the yeast enzymes, halting respiration completely.

Campus Quest Academy • Science Answer Key Page 3 of 4

Answer Key & Scoring Guide

Modules 3 & 4: ELA & World History Solutions

25 Pts ELA • 25 Pts History

Module 3: English Language Arts Keys (25 Points Total) RI.7.1, RI.7.4, W.7.9

Part A & B Objective Keys (13 Pts):

1. "Perpetual": [B] Unending (2 pts).

2. "Azoic hypothesis": [B] Life cannot survive without sunlight/warmth (2 pts).

3. Energy Process: Chemosynthesis (2 pts).

4. Physical Adaptation Quote: "cellular membranes have evolved specialized polyunsaturated fats to resist catastrophic hydrostatic crushing" (3 pts).

5. Extraterrestrial Connection: Since organisms thrive in sunless deep vents on chemical energy, life could exist under ice oceans on moons like Europa without sunlight (4 pts).

Part C: CER Rubric & Exemplar (12 Pts):

Claim (3 pts): Technological innovations in submersibles disproved the assumption that deep trenches are lifeless voids.

Evidence (4 pts): Paragraph 2 states that autonomous robotic submersibles documented "thriving communities of bioluminescent organisms, giant amphipods, and translucent snailfish."

Reasoning (5 pts): This evidence proves that extreme pressure and the complete absence of sunlight do not prevent living systems from thriving, directly disproving the 19th-century azoic theory through direct scientific observation.

Module 4: World History Keys (25 Points Total) Historical Analysis & Synthesis

Part B: Trade Logistics Keys (8 Pts):

1. Caravanserai Role: Protected travelers from banditry, provided water/fodder for camels, allowed merchants to rest and exchange cultural ideas safely across dangerous terrain.

2. High-Value Luxury Goods: High transportation costs across deserts made shipping cheap, bulky food uneconomical. Only high-value, lightweight commodities (silk, gems) yielded sufficient profit margin to justify travel risks.

Synthesis & Sign-Off Criteria (9 Pts):

Synthesis Prompt: Look for cross-disciplinary thinking. Full credit awarded if student names two subjects and accurately explains a shared analytical skill (e.g., using mathematical data to verify claims, evaluating experimental evidence, testing hypotheses).

Scoring Summary: Packet total is scored out of 100 points (25 pts per module). A score of 70+ indicates proficient grade-level mastery.

Campus Quest Academy • ELA & History Answer Key Page 4 of 4